Mohan, Yamni S Viswanathan, Sivaram Jayakumar, Jaikishan Lloyd, Errol K J Vidyasagar, Trichur R
Published in
Brain structure & function
Most neurons in the primary visual cortex (V1) of mammals show sharp orientation selectivity and band-pass spatial frequency tuning. Here, we examine whether sharpening of the broad tuning that exists subcortically, namely in the retina and the lateral geniculate nucleus (LGN), underlie the sharper tuning seen for both the above features in tree sh...
Aghili Yajadda, M M Robinson, P A Henderson, J A
Published in
Biological cybernetics
Physiologically based neural field theory (NFT) is extended to encompass cortical plasticity dynamics. An illustrative application is provided which treats the evolution of the connectivity of left- and right-eye visual stimuli to neuronal populations in the primary visual cortex (V1), and the initial, linear phase of formation of approximately one...
Meylakh, Noemi Henderson, Luke A.
Published in
The Journal of Headache and Pain
BackgroundMigraine is a neurological disorder characterized by intense, debilitating headaches, often coupled with nausea, vomiting and sensitivity to light and sound. Whilst changes in sensory processes during a migraine attack have been well-described, there is growing evidence that even between migraine attacks, sensory abilities are disrupted i...
Chavane, Frédéric Perrinet, Laurent Rankin, James
Horizontal connections in the primary visual cortex of carnivores, ungulates and primates organize on a near-regular lattice. Given the similar length scale for the regularity found in cortical orientation maps, the currently accepted theoretical standpoint is that these maps are underpinned by a like-to-like connectivity rule: horizontal axons con...
Molz, Barbara Herbik, Anne Baseler, Heidi A. de Best, Pieter B. Vernon, Richard W. Raz, Noa Gouws, Andre D. Ahmadi, Khazar Lowndes, Rebecca McLean, Rebecca J.
...
Published in
NeuroImage : Clinical
Autosomal recessive Achromatopsia (ACHM) is a rare inherited disorder associated with dysfunctional cone photoreceptors resulting in a congenital absence of cone input to visual cortex. This might lead to distinct changes in cortical architecture with a negative impact on the success of gene augmentation therapies. To investigate the status of the ...
Tsunoda, Keisuke Sato, Akinori Y Mizuyama, Ryo Shimegi, Satoshi
Published in
Psychopharmacology
Noradrenaline (NA) is a neuromodulator secreted from noradrenergic neurons in the locus coeruleus to the whole brain depending on the physiological state and behavioral context. It regulates various brain functions including vision via three major adrenergic receptor (AR) subtypes. Previous studies investigating the noradrenergic modulations on vis...
Rockland, Kathleen S.
Published in
Brain structure & function
Tani, Ryo Kashimori, Yoshiki
Published in
Bio Systems
Top-down processing in neocortex underlies functions such as prediction, expectation, and attention. Visual systems have much feedback connection that carries information of behavioral context. Top-down signals along feedback pathways modulate the representation of visual information in early visual areas such as primary visual cortex (V1). Recent ...
Lindeberg, Tony
This article gives an overview of a normative theory of visual receptive fields. We describe how idealized functional models of early spatial, spatio-chromatic and spatio-temporal receptive fields can be derived in a principled way, based on a set of axioms that reflect structural properties of the environment in combination with assumptions about ...
Shin, Donghoon
The recently developed ability to simultaneously record thousands of neurons provides unprecedented opportunity for answering important questions about the brain. However, reliable analysis of large-scale neural data has to be established in advance to answer questions. The conducted project is two-fold: In the first half, I validated the reliabili...
